Harmony Blockchain Data Indexing API
Harmony Quick Facts
Harmony is an open and fast blockchain. The production mainnet supports 4 shards of 1000 nodes, capable of running Ethereum applications with 2-second transaction finality, and 1000 times lower fees than Ethereum. Harmony is your open platform for assets, collectibles, identity, governance. The secure bridges offer cross-chain asset transfers with Ethereum, Binance and 3 other chains. Harmony’s Effective Proof-of-Stake (EPoS) reduces centralization while supporting stake delegation, reward compounding and double-sign slashing. Harmony aims to build an open network of nodes operated and governed by a large community. This node community is called Pangaea.
- Mainnet
- Harmony Testnet
Chain name | harmony-mainnet |
Chain ID | 1666600000 |
Block explorer | https://explorer.harmony.one/ |
Blocktime | 2 seconds |
Historical balances | ✅ |
NFT assets and metadata | ✅ |
Premium Endpoints | |
Premium Balances | ❌ |
Premium Transactions | ❌ |
Premium Log Events | ❌ |
Query via SQL on Increment | ✅ |
Don't Have an API Key?
Sign up to start building on Harmony.
Unlock millions of requests and free archive data on all chains.
Network Status
- | - | - | |||
---|---|---|---|---|---|
Daily Active Wallets Unique wallets who transact on a daily basis. | - | - | - | ||
Transactions Unique transactions on a daily basis. | - | - | - | ||
Active Tokens Unique tokens active on a daily basis. | - | - | - | ||
Powered by Increment. |
Code Samples
- Token Balances
- Transaction History
- Portfolio
- Get a block
Get token balances for address
/v1/{chainName}/address/{walletAddress}/balances_v2
- shell
- JavaScript
- ruby
- python
curl --request GET --url https://api.covalenthq.com/v1/{chainName}/address/{walletAddress}/balances_v2 --header 'accept: application/json' --header 'x-api-key: demo'